Hey Guys,
I have failed to do this import , but i am lazy and dont want to copy paste stuff from one designer to antoher.
I did my developments local on 2009 r2 but for a 5.0sp1 client … silly me .
Any idea on how should I save myself a 30 mins 
ta,
gabor
You have to edit the text file and manually remove any properties / sections that are not available in 5.0. These totally depend on the object types being imported.
Just to clarify for everyone
I imported tables and forms and forms had no issue.
From the tables I removed the fieldgroups section and everything was imported just fine !
thanks , Matt !
G.
If I were your boss, I would have made you do it over in the 5.0 client 
I would have suggested this
http://mibuso.com/blogs/ara3n/2010/04/09/downgrade-2009-sp1-objects-into-5x-or-older-databases/